With the devastating 1918 pandemic in mind, US health officials saw an outbreak in Asia and swung into action. What happened ...

Influenza is one of the most unpredictable of diseases. Each year, the virus mutates slightly in a process called antigenic drift. The greater the mutation, the less likely that your immune system ...

2). Classical vaccines such as diphtheria and tetanus, for instance, target toxin antigens that have not had antigenic drift during the past century. Other antigens with little or no antigenic ...

The influenza A virus genome consists of eight segments of single-stranded, negative-sense viral RNA, which encode multiple ...

Usually such mutations are minor, resulting in a process called antigenic drift. Even minor changes in the virus’s make-up, however, mean that new vaccines must be developed to combat it.

Influenza is one of the most unpredictable of diseases. Each year, the virus mutates slightly in a process called antigenic drift. The greater the mutation, the less likely that your immune system ...